the power cord has to have a data link (USB? or just networking over power line itself) through which the power outlet can tell the computer how much does the energy cost at any given time. this is a very welcome but very expensive addition to the infrastructure.
my wall outlet supplies power from 3 different sources: grid, solar on the roof and/or powerwall, depending on the weather, grid status (which sucks where I live) and time of day. computer only knows time of day off the bat, everything else it has to learn in a complex way.
if I have a "cost" or, better, "status" information integrated into the power itself, smart appliances (like computer) can make decisions what they can or can not run. right now I can start training my models on my 4090 at night, we have an outage, and 4090 will happily drain the powerwall, so I'll not have an A/C in the morning. models can wait, they're stupid anyway, or at least I like the A/C better.
